YARMOUTH, Maine — A Cumberland County grand jury heaped additional charges against a man and woman whose late September argument in Yarmouth allegedly escalated into a shootout.

The grand jury indicted Michael Lovering, 47, of North Yarmouth — who was charged with aggravated reckless conduct at the time of the Sept. 30 incident — on additional charges of criminal threatening and terrorizing.

Samantha Newton, 31, of Yarmouth was indicted on additional charges of reckless conduct, criminal threatening and terrorizing, as well as her original charge of carrying a concealed weapon.

The December Cumberland County grand jury indictments were announced Friday by the county district attorney’s office.

Yarmouth police said they received a disturbance call at 24 Granite St. around 1 a.m. Sunday, Sept. 30, and that the alleged argument there between Lovering and Newton had escalated to an exchange of gunfire between the two individuals while officers were on their way to the scene.

According to police, no one was injured in the ordeal, during which the suspects allegedly fired a total of 12 rounds between them.